Access to Hidden Members
	• Even when members are hidden, they can still be used. • If they are public or protected, they can be accessed from within a derived class member function by using the class name and the scope resolution operator.   base_class_name::function_name() • This gives us a means to reuse base class functionality in the implementation of our derived classes. • If the hidden members are public, they can be accessed from within a client application by saying object.base_class_name::function_nme()